ASTROSAT CZTI

Data Quality Report

Orbit 45143

Creation date: 2024-06-27T23:09:55.275748
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A13_017T02_9000006046_45143cztM0_level2.fits modeM0/AS1A13_017T02_9000006046_45143cztM0_level2_quad_clean.evt
Size (bytes)510,140,160104,650,560
Size486.5 MB 99.8 MB
Events in quadrant A7,611,604638,272
Events in quadrant B3,251,843736,829
Events in quadrant C3,101,874708,931
Events in quadrant D4,415,149632,285

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268141
B0138901
C0136871
D0174261

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A648595314.695451%
B6485981.511180%
C6484530.817397%
D64842563.948180%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7335 6486 689 689 9.39% 10.62%
B 7335 6486 23 23 0.31% 0.35%
C 7334 6485 19 19 0.26% 0.29%
D 7334 6485 176 176 2.40% 2.71%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 2347365 15496.87 726 713 151.4
A 15 223 2262445 14936.07 726 713 151.4
A 15 174 117477 771.09 726 713 151.4
B 4 170 90329 600.15 751 729 149.3
B 10 3 63727 421.96 751 729 149.3
B 0 183 49150 324.33 751 729 149.3
C 14 254 128687 724.43 742 745 176.6
C 6 247 34432 190.74 742 745 176.6
C 11 16 12732 67.87 742 745 176.6
D 13 249 520496 2781.49 738 713 186.9
D 1 52 434817 2323.0 738 713 186.9
D 5 222 212763 1134.73 738 713 186.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter